A Case study approach to revising the coastal topic for GCSE Geography - AQA A

1. Coast CASE STUDIES
AQA A
Geography
MO@sbs

2. Case Studies …
Salt
marsh
Landslide
Engineering
Sea
level
rise

3. Case Studies …
Salt
marsh
KeyhavenLandslide
Engineering
St Bees
Sea
level
rise
Holbeck Hall
Scarborough
Maldives

4. 1. Saltmarshes
• Locate – Sketch map
• Associate – landform 156
• Process – E 167
• Board
• QR Code Reader
• Grassland scrub Saltmarsh Reedbeds

5. Saltmarshes
• Locate – Sketch map
• Associate – landform 156
• Process – E 167
• Board
• QR Code Reader
• Grassland scrub Saltmarsh Reedbeds
Keyhaven Marshes HAMPSHIRE

6. 2. Sea Level Change
• Case Study Compass rose NESW – board
• Ppt
• Watch, then listen

8. Environmental impacts of coastal flooding
• Loss of beaches.
• Destroys habitats.
• Loss of topsoil

9. Economic.
• Loss of tourism.
• Loss of jobs.
• Airport in danger.
• Disruption of fishing industry.
• Costly sea defence schemes.

10. Social • Houses destroyed/lost.
• Communities split up.
• Lack of freshwater.

11. Political.
• Ask for aid to build coastal defences. (Japan
$60mill) to protect Male.
• Government policies to pledge reduction of
greenhouse gases.
• Try to persuade rest of world to do same.
• Buying land to move people before it is too
late.

12. NESW
Natural
Economic
Social
Political

13. 3. Management
• Quick sketch – which is which?
• St Bees Card Fill
• Table Sort
• QUESTION

15. Cafe
Toilet
Lifeboat
TOMLIN
HEAD
GOLF
COURSE
St Bees
CUMBRIA
Coastal
Management

17. Rottington Beck brings river
material [load] onto the coast
Waves are bent as they
approach the coast shaping the
beach likewise
Revetment protects the Café and
rock armour the rest of the slope
Waves are reflected on the Head
and concentrated on the centre
of the sea wall
Large material is quarried from
the head and deposited on the
wave cut platform
A ‘do nothing’ strategy is used
below the golf course so that
beach material is maintained
A sea wall provides the main
defence with a promenade on top
Groynes stop long shore drift
trapping and maintaining the
beach material

19. Cafe
Toilet
Lifeboat
TOMLIN
HEAD
GOLF
COURSE
St Bees
CUMBRIA
Coastal
Management
RottingtonBeckbringsriver
material[load]ontothecoast
Large material is quarried from
the head and deposited on the
wave cut platform

21. LANDFORMS - framework PROCESSES - cause AFFECT ON PEOPLE - value SOLUTIONS – and affect
Residents of the beach estate
have noticed a rise in insurance
premiums 15
A ‘do nothing’ policy is
employed for the Golf Course
cliff as the beach material
protects the slope toe 16
Incoming waves and reflected
[by Tomlin Head] and refracted
[bent] to deposit beach material
14
Longshore drift moves eroded
material down beach to
replenish beach stocks 8
Hydraulic Action and corrasion
erodes wave cut notches at the
base of the cliffs 1
The golf course cliffs are
unconsolidated glacial terminal
moraine 6
The golf course has built
another hole and is considering
abandoning the third hole 3
Groynes stop material removed
from the head and carried in
from offshore being carried too
far down the coast 9
The beach café is gradually
falling into the sea 2
St Bees Head is a sandstone
cliff 50 m high. 5
Hoteliers and caravan park
owners are concerned that their
investments will devalue 12
Constructive wave
transportation moves material
onshore in the summer months
7
A highly graded beach with large
expanse of sand is topped by
graded stones and cobbles 13
Rip rap + revetment protect the
base of slopes below the beach
café and caravan park 10
The sea wall deflects incoming
wave energy providing a new
resource in the form of a
promenade 4
Sand dunes existed either side
of Rottington Beck 11

23. LANDFORMS- framework PROCESSES- cause
AFFECT ON PEOPLE-
value
SOLUTIONS– and affect
St Bees Head is a
sandstone cliff 50 m high. 5
Hydraulic Action and
corrasion erodes wave cut
notches at the base of the
cliffs 1
The beach café is gradually
falling into the sea 2
The sea wall deflects
incoming wave energy
providing a new resource
in the form of a
promenade 4
The golf course cliffs are
unconsolidated glacial
terminal moraine 6
Constructive wave
transportation moves
material onshore in the
summer months 7
The golf course has built
another hole and is
considering abandoning the
third hole 3
Groynes stop material
removed from the head
and carried in from
offshore being carried too
far down the coast 9
Sand dunes existed either
side of Rottington Beck 11
Longshore drift moves
eroded material down
beach to replenish beach
stocks 8
Hoteliers and caravan park
owners are concerned that
their investments will
devalue 12
Rip rap + revetment
protect the base of slopes
below the beach café and
caravan park 10
A highly graded beach with
large expanse of sand is
topped by graded stones
and cobbles 13
Incoming waves and
reflected [by Tomlin Head]
and refracted [bent] to
deposit beach material 14
Residents of the beach
estate have noticed a rise
in insurance premiums 15
A ‘do nothing’ policy is
employed for the Golf
Course cliff as the beach
material protects the slope
toe 16

24. Question
Contrast Hard Engineering with Soft Engineering
to explain which is the most desirable
management strategy.
Hard +
Hard –
Soft +
Soft -

25. 4.

27. Why did Holbeck Hall collapse?
Name Date
Reasons for collapse
‘rock’ type
(think of St Bees)
weather
beforehand
e _ _ _ _ _ under-
cutting the cliff
Boulder clay
when dry…
s _ _ _ _ _ _ _
(and s _ _______ _ _ )
when wet…
key word =
lubrication
“Lady Luck”,
fortune, destiny,
God?
types?
(remember
coastal kung-fu)
Any possible
human causes?
w _ _ _ _ _ _ _ _ _
breaking the cliff up
types?
Can you think of any
possible reasons first?Any others?

30. Do

31. Questions
Environmental
Economic
Social
Political
A case study of an area of recent or threatened cliff collapse –
rates of coastal erosion;
Holbeck Hall, St Bees
1. What are the reasons why some areas are
susceptible to undercutting by the sea and collapse;
[4]
2. How do people worsen the situation; [4]
3. What are the impact on people’s lives and the
environment? [8]

34. Dawlish Warren
Slapton Ley